[DUCKY]

Welcome to the boards Brandon. Some pics would come in handy, but Lavey is right. you will need to install a transom, stringers and knees, gunnel supports, and toeboard, and a floor if it's truly bare. Most of these item are usually installed while the hull is still in the mold, and before the deck is attached. The biggest problem you will have is getting the shell squared up and keeping that way while you are working on it. If it were me, I would pull the deck back off, and set the hull on nice level concrete to get started. Do not attempt to work on it while it's sitting on a trailer. Feel free to call me if you have any questions or want the support work done.

PS, the "175hp" rule is intended to keep boats under 20 ft insurable. If you do the support work right and reinforce the hull properly, you can put anything you want on it. There are some people I have seen with Merc drag motors(300+ hp) on 15 ft boats. The biggest problem with a small boat/big motor combo is the weight of the motor and how far it is setback from the transom.